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MOLE-O!.  M  12345678 12345678  O  12345678 12345678  910111213141516 910111213141516  L  12345678 12345678  E  12345678 12345678.

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Presentation on theme: "MOLE-O!.  M  12345678 12345678  O  12345678 12345678  910111213141516 910111213141516  L  12345678 12345678  E  12345678 12345678."— Presentation transcript:

1 MOLE-O!

2  M   O    L   E 

3 M–1 Question  If your empirical formula is CH 3 and your molar mass is 45.0 g/mole, what is your molecular formula?  Answer Answer

4 M-2 Question  If your empirical formula is CH 2 and your molar mass is 28.0 g/mole, what is your molecular formula?  Answer Answer

5 M-3 Question  If your empirical formula is CH 2 O and your molar mass is g/mole, what is your molecular formula?  Answer Answer

6 M-4 Question  If your empirical formula is CH 3 and your molar mass is 60.0 g/mole, what is your molecular formula?  Answer Answer

7 M-5 Question  If your empirical formula is CH 2 and your molar mass is 42.0 g/mole, what is your molecular formula?  Answer Answer

8 M-6 Question  If your empirical formula is CH 2 O and your molar mass is g/mole, what is your molecular formula?  Answer Answer

9 M-7 Question  If your empirical formula is CH 3 and your molar mass is 30.0 g/mole, what is your molecular formula?  Answer Answer

10 M-8 Question  If your empirical formula is CH 2 O and your molar mass is 90.0 g/mole, what is your molecular formula?  Answer Answer

11 O-1 Question  What is the volume (in L) of 52.0 grams of NH 3 at STP?  Answer Answer

12 O-2 Question  How many formula units are contained in grams of potassium hydroxide?  Answer Answer

13 O-3 Question  You have 8.3 X 10 8 atoms of zinc. How many moles is this?  Answer Answer

14 O-4 Question  What is the molar mass of calcium nitrate?  Answer Answer

15 O-5 Question  What is the molar mass of copper (II) nitrate?  Answer Answer

16 O-6 Question  You have 264 grams of sodium hydroxide. How many moles is this?  Answer Answer

17 O-7 Question  You have 1.2 grams of sodium. How many atoms is this?  Answer Answer

18 O-8 Question  What is the volume (in L) of 4,260 atoms of Neon at STP?  Answer Answer

19 O-9 Question  What is the volume (in L) of grams of carbon dioxide at STP?  Answer Answer

20 O-10 Question  What is the mass (in grams) of moles of chromium (II) chloride?  Answer Answer

21 O-11 Question  What is the mass (in grams) of 1.74 X formula units of sodium hydroxide?  Answer Answer

22 O-12 Question  How many molecules are contained in 26 grams of water?  Answer Answer

23 O-13 Question  What is the mass of 3 atoms of helium?  Answer Answer

24 O-14 Question  What is the volume (in L) of grams of nitrogen dioxide at STP?  Answer Answer

25 O-15 Question  What is the mass of 3,720 molecules of O 2 gas?  Answer Answer

26 O-16 Question  What is the mass (in grams) of 263 L of dinitrogen pentoxide at STP?  Answer Answer

27 L-1 Question  A gram sample of hydrated copper (II) sulfate, CuSO 4 X H 2 O, is heated to remove all the water and produce grams of the anhydrous salt. What is the value of “X?” AnswerAnswer

28 L-2 Question  What is the percent water in copper (II) nitrate trihydrate?  Answer Answer

29 L-3 Question  What is the percent water in nickel (II) chloride hexahydrate?  Answer Answer

30 L-4 Question  Hydrated calcium sulfate, CaSO 4 X H 2 O, contains 20.93% water. What is the value of “X?”  Answer Answer

31 L-5 Question  Borax powder has the formula Na 2 B 4 O 7 X H 2 O. When grams of the hydrate are heated and the water is removed, grams of anhydrous salt remain. What is the value of “X?”AnswerAnswer

32 L-6 Question  What is the percent water in magnesium nitrate hexahydrate?  Answer Answer

33 L-7 Question  What is the percent water in barium chloride dihydrate?  Answer Answer

34 L-8 Question  If grams of epsom salt, MgSO 4 X H 2 O, is heat to remove all water, grams of salt remain. What is the value of “X?”  Answer Answer

35 E-1 Question  What is the percent lead in lead (II) chloride?  Answer Answer

36 E-2 Question  What is the percent potassium in potassium dichromate?  Answer Answer

37 E-3 Question  What is the empirical formula of a compound composed of 77.7% iron and 22.3% oxygen?  Answer Answer

38 E-4 Question  What is the empirical formula of a compound composed of 44.0% iron and 56.0% chlorine?  Answer Answer

39 E-5 Question  What is the empirical formula of a compound composed of 34.4% iron and 65.6% chlorine?  Answer Answer

40 E-6 Question  What is the percent sulfur in iron (II) sulfide?  Answer Answer

41 E-7 Question  What is the percent sodium in sodium sulfate?  Answer Answer

42 E-8 Question  What is the empirical formula of a compound composed of 69.9% iron and 30.1% oxygen?  Answer Answer

43 M-1 Answer C3H9C3H9

44 M-2 Answer C2H4C2H4

45 M-3 Answer  C 12 H 24 O 12

46 M-4 Answer  C 4 H 12

47 M-5 Answer C3H6C3H6

48 M-6 Answer  C 6 H 12 O 6

49 M-7 Answer C2H6C2H6

50 M-8 Answer C3H6O3C3H6O3

51 O-1 Answer  68.5 L NH 3

52 O-2 Answer  3.06 x formula units KOH

53 O-3 Answer  1.14 x moles Zn

54 O-4 Answer  g/mole Ca(NO 3 ) 2

55 O-5 Answer  g/mole Cu(NO 3 ) 2

56 O-6 Answer  6.6 moles NaOH

57 O-7 Answer  3.1 x atoms Na

58 O-8 Answer  1.59 x L Ne

59 O-9 Answer  L CO 2

60 O-10 Answer  4.3 grams CrCl 2

61 O-11 Answer  1.16 x grams NaOH

62 O-12 Answer  8.7 x molecules H 2 O

63 O-13 Answer  1.99 x grams He

64 O-14 Answer  27.4 L NO 2

65 O-15 Answer  1.98 x grams O 2

66 O-16 Answer  1,268 grams N 2 O 5

67 L-1 Answer  22.4% H 2 O

68 L-2 Answer  22.4% H 2 O

69 L-3 Answer  45.4% H 2 O

70 L-4 Answer  CaSO 42H 2 O

71 L-5 Answer  Na 2 B 4 O 710H 2 O

72 L-6 Answer  42.1% H 2 O

73 L-7 Answer  14.7% H 2 O

74 L-8 Answer  MgSO 47H 2 O

75 E-1 Answer  74.48% Pb

76 E-2 Answer  26.58% K

77 E-3 Answer  FeO

78 E-4 Answer  FeCl 2

79 E-5 Answer  FeCl 3

80 E-6 Answer  36.52% S

81 E-7 Answer  32.37% Na

82 E-8 Answer  Fe 2 O 3


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